426440044064 has 12 divisors (see below), whose sum is σ = 839553836814. Its totient is φ = 213220022016.

The previous prime is 426440044057. The next prime is 426440044067. The reversal of 426440044064 is 460440044624.

It can be written as a sum of positive squares in only one way, i.e., 417197144464 + 9242899600 = 645908^2 + 96140^2 .

It is a super-2 number, since 2×426440044064² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (426440044067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6663125657 + ... + 6663125720.

Almost surely, 2^426440044064 is an apocalyptic number.

It is an amenable number.

426440044064 is a deficient number, since it is larger than the sum of its proper divisors (413113792750).

426440044064 is a wasteful number, since it uses less digits than its factorization.

426440044064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13326251387 (or 13326251379 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 38.

Adding to 426440044064 its reverse (460440044624), we get a palindrome (886880088688).

The spelling of 426440044064 in words is "four hundred twenty-six billion, four hundred forty million, forty-four thousand, sixty-four".